1. By a 53 percent to 39 percent margin, voters say they'd rather see Republicans in control of Congress to provide a counterbalance to President Obama's policies.

2. Republicans now hold a 5-point lead over Democrats in the generic congressional ballot among those who say they will definitely vote in the midterm elections.

3. President Obama's job approval rating has sunk to 41 percent, the lowest of his presidency.

These findings suggests Republicans are on their way to expanding the Senate map. There are now possible GOP pickup opportunities in states like Colorado, Michigan, and New Hampshire — not just the seven Democratic-held seats in conservative-leaning states like Alaska, Arkansas, Louisiana, Montana, North Carolina, South Dakota, and West Virginia.

Republicans need only six Senate seats to control both chambers of Congress.

If Democrats can't mobilize their voters better in this year's midterm election — a problem Sasha Issenberg frames nicely — this year could look like 2010 all over again.